You have to understand not only what is written literally, but also its subtext.

Hablan entre sí en una jerga que nadie más comprende.

They talk to each other in a lingo that no-one else understands.

I forgot to mention: you can forward this site which explains a little about language learning. I tried to call you on your mobile but it is not working. Please call me on this number: number undisclosed.The ride took us through mountainous areas, covered with dark green forest, with so many curves that I got sick. I wanted to vomit but I held myself back, as there were so many other next to me.The room had around 4 square meters and the bathroom and shower were tiny. I was not content about that, as we could have stayed in a much better hotel for less. But we had made reservations in advance anyway.